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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Going through the TextureMapperGL implementation, I see that BeginClip advances the bit plane to the next
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">clipStack().setStencilIndex(stencilIndex * 2);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, EndClip does not revert it back before calling clipStack().applyIfNeeded(m_context3D.get());<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The applyIfNeeded disables stencil test only if stencilIndex is 1.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">if (clipState.stencilIndex == 1)<o:p></o:p></p>
<p class="MsoNormal"> context->disable(GraphicsContext3D::STENCIL_TEST);<o:p></o:p></p>
<p class="MsoNormal"> else<o:p></o:p></p>
<p class="MsoNormal"> context->enable(GraphicsContext3D::STENCIL_TEST); <o:p>
</o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There is no place in the code that is attempting to reverse the impact of BeginClip. Isn’t a right bit shift required in the EndClip call before the applyIfNeeded call? Otherwise, I don’t see how EndClip will disable stenciling test ever.
The problem is probably more obvious if you have nested clipping. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note - my observation is based simply on reading the code. Please correct me if I have missed something.
<o:p></o:p></p>
<p class="MsoNormal"><br>
Thanks<o:p></o:p></p>
<p class="MsoNormal">Arpit<o:p></o:p></p>
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